Heater for gaseous fluids.



P. SWBNSON.

HEATER POR GASEOUS FLUIDE.

APPLICATION FILED JAN.23, 1914.

Patented Mar. 30, 1915.

2 SHEETS-SHEET L y am P. SWENSON. HEATER POR GASBoUs FLUIDS.

APPLICATION FILED JAN.23,1914.

Patented Mar. 30, 191.5

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HEATER EUR GASEUS IELU'IEDS.

Specification of i.ettera Patent.

Patented Mair. Sti), MM5.,

.application ated January t3, 19M. Serial to. @13,80%

To all 'w/lom it may concern.

Be it known that l, PAUL Swanson, a citizen of the United States, residing at Hopkins in the county of Hennepin and State of innesota, have invented certain new and usetul lmprovements in Heaters tor Gaseous Fluids; and l do hereby declare the following to be a full, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and 'use the same.

My invention has `for its object to provide an improved heater or vaporizer for explosive engines, and more particularly, a lleater or vaporizer that vaporizes the heavier hydro-carbon liquids, such as heroaene, as Well as the lighter or more volatile hydro-cartoons such as gasolene.

Generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and dened in the claims.

ln the accompanying drawings which illustrate the invention, like characters indi- -eate like parts throughout the several views.

Referring to the drawings: -Figure l is a side elevation showing the complete heater; Figi. 2 is a vertical section taken approximately on the line m2 m2 on Fig. l, some parts being shown in full; and Fig. 3 is a section taken on the line ma m3 on Fig. 2.

The carburetor casing is, as shovvn, made up ot three sections, to-Wit, a lower oil reservoir l, an upper shell 2 ail'ording what is designated as a mixing chamber, and an intei-mediate' shell 3 affording what is designated as a vaporizing conduit 3. 'llhe oil reservoir l may he of the usual or any suitable construction, and the same statement is true in respect to the mixing chamber 2.

lhe oil reservoir l receives oil from an oil supply pipe l and delivers the saine through an opening 5 into the lower portion ot the vaporizing conduit 3", under the action ot suction and the control ot valve mechanism of well hnovvn or any suitahle construction, forming no part ot the present invention, and hence, not necessary tor the purpose ot this cese to consider. may he noted, however, that the said oil reservoir l has a supplementnl air intake pipe 6, through which suidicient air is drawn to carry upvvard with it the volatile oil or hydro-carbon contained in the oil Well.,

The mixing chamber 2, at its ends mai-hed 2G is adapted `for connection to the manifold or to the explosion chamber of an explosive engine, and it is provided with an auxiliary air intake port at 7, normally closed by a main .air intake valve 8 of any suitable` construction, not necessary for the purposes of this case to consider.

ne or more exhaust dues, preferably several, and as shown, 2 such lilies, indicated by the numeral 9, are passed transversely through the vaporizing conduit 3. rllhese dues are preferably made of brass and at one end are provided with stop flanges 10, and at their other ends with annular nuts ll. These @anges outer faces ot the vaporizing conduit 3 said dues in position hetiveen the tlues and chamber. `The external surfaces ot these i'lues are ormed with circumferentially extended annular grooves that are prefers bly tl-shaped in cross section lilre the threads et a screw. The said grooves l2 are shown as helical; The vaporizing conduit 3 is internally formed with cylindrical surfaces t3 that engage the sharp projecting edges o the ribs or threads -lforined by the grooves l2, and cooperating therewith to alord a multiplicity oit closely positioned and comparatively small channels, through which he air and volatile and more or less vapori ed hydro-carbon are dravvnon their Way from the oil reservoir, l to the so-called mising chamber 2. The upper and lower internal cylindrical suraces ot the said conduit 3 are connected port ltthat extends parallel to the arles oil the dues 9 from one wall to the other ot the vaporiaing conduit. rlhe lower portion the loiver internal cylindrical surfaces the said vaporining' conduit 3 is connected to the intake passage 5, hy a port srailar to the port lll; and in like manner, the upper portion of uhe upper conduit 3 is communication with the mixing chainher 2 l port-lll.n which, like the said ports ist a, 5, entends from one side to the other he vapcriaing conduit.

lin this improved vaporiaer, l utili.- heat from the exhaust ot the explosive engine, as a medium for heating the volatile hydro-carbon and primary charge ot air, so as to thereby increase the volatility or the hydro-Carlson and the absorbing property ot the air, unis is accomplished hy directopposite walls ot' the and securely hold the and have tight joints the Walls of the said l0 and nuts l1 clamp the a j .e .e internal cylindrical surance ol ing the exhaust through the exhaust ues 9. To such ends, a hood 17 is securely fastened on one side of the shell or casing 3, so as to afford a passage 18 between the adjacent ends of the fines 9; and to the other side ot' the said shell 3 li secure a divided hood 19 formed with internal chambers 20 and 21.

The upper chamber 2d, through a'neck 22 and other connections, not shown, receives the exhaust from the explosive engine and directs the same through the upper due 9, from whence the exhaust products of combustion are directed downward through the passage 18, thence, through the lower iue 9 into the lower chamber 21 and from thence outward, through the opening 23 and other connections if desired, either to a mumer, or directly to the atmosphere. As is evident, the exhaust will keep the lues 9 and the walls ot the vaporizing conduit at such temperature that heavy oils, such as kerosene, will be rendered very volatile, and hence, the air drawn in therewith, and also heated, will absorb and carry with it in vapor form,

suiicient hydro-carbon to aii'ord the properA further reduced in" explosive mixture when richness by mixture therewith of the air drawn into the mixing chamber 2 through the auxiliary air intake port 7. The vaporizin'g action is very materially increased by a plurality ot capillary or very small passages through which the air--and volatile vapor are drawn and which are formed by the threads or grooves in the peripheries of the dues 9. Utherwise stated, a very large numher of small streams of volatilized hydro-carbon and air are directed against the. hot surfaces or@ the dues. Also, the threadlike grooves prevent a central convergence ot the vapor as it is drawn upward through the vaporizing chamber.

rllhe peripheral corrugations and intervening grooves formed on the outer surface ot the dues 9, as is obvious, very greatly increase the outer radiatim,4 surface exposed for Contact with the hydro-carbon vapors and air. lirono broad point of view, howover, the invention consists in providing a messes multiplicityfof relatively small passages 1n the vaporizing conduit between the walls thereof and the outerv surface of the exhaust flue or flues. The iues 9 can be removed for cleaning purposes.

The heater or vaporlzer described is of simple construction and comparatively small cost, and has no parts liable to get out of order, and has no delicate joints, such as formed between` small dues and flue sheets, and which joints are liable to be burned out or destroyed and rendered leaky by the hot products of exhaust.

What l claim is:

1.' ln a heater vfor heating one gaseousA duid from another, the combination with a casing formed with internal cylindrical surfaces and diametrically opposite inlet and outlet ports, of a ue extended through said vaporizlng conduit and provided with closely ,I

adjacent external ribs extended in a circum- .y

faces of thesaid conduit and cooperating therewith to aiord a multiplicity of small segmental passages surrounding said llue,`

and a hood connecting the said dues at one end.

In testimon whereorl ll ax my signature 1n presence o two witnesses.

PAUL SW'ENSON.,

Witnesses:

Hauer D. Krcconn, lli". D. Murcia/iNn. 

